Electrical protective apparatus.



PATENTEDMAR. 24, 1908.

2 SHEETSSHEET 1.

MN Qhil vN MN RN :iL v fi w l I I 1'7 I! I I l h) RN J. A. KENNY.ELECTRICAL PROTECTIVE APPARATUS.

APPLICATION FILED JAN. 7. 1904.

No. 882,892. PATENTED MAR. 24,1908. I I

J. A. KEN my. ELECTRICAL P V APPLIUAT ROTBCTIVE APPARATUS.

his 15mm: I I

UNITED sin mils JAMES A. KENNY Ul" CHICAGO, ILLI NO ZtS.

, ELECTRICAL PROTECTIVE APPARATUS. t

' y no 882,892.

)fentetl certain new and useful improve- .ments in Eleetrieullroteetix'e .kppm'ttus, ol' lgwhieh the following is a lull. 'elear,z'tntl exnet t'lt sorihtion'. 1 "This invention. while suse-eptihle ofuse so ltif'far ascertain of itl'eatures tre eoneernetl i'nothersittmtionh. hats for its ohjeet more ffijtflllltftllfill)"to provitleimprm etl means for fgnartling telephone. telegraph or like instrulXl(-1ll-S and the users thereol'\ against injury "fionrlightning andhigh tension currents f t-hut may inrzttle the circuit in w hieh suehinstruments are etnplovetl;

' The invel it ion eons 5th" in-the featurea ol' 'l ip'rqyenienthereitnil'ter tleseriliet l. illusitetlin the a -eo npanyingtlrztwit'igs illltl partitiulurlv pointed out in the elziinis at the endof thisspeeiliention.

Figure} is a plan rieu'tpmt's beingshown section) of an zlppztlzllllfieinhtitlyingflny ES im'entiOn'. Fig 2 is i View iu ,itle elei'zitioiilhg. 3 is n \'l(\\' in \'tillt'ztl (-i-tmgelion1m LlineQl -Ql, (i i-Fig.t. lii fll lrl t Similar 'iew on line -l'--f-4,'ol' Fig-.1. Fig. '5 is nsiinihtr ;.\'ie f}online 5 5.. ot'l ig. ,ll lhll phmrie'wf ot one of thet'zltlnnir ;A tlesignutesthe lmse ol' theapparatus. tliis lmse liein;lpinietl ol' an suitul ile ins'ttl:i-tii1;: material, sun-h as. llill'llrnhher, \"ultniZet-l lilier,porcelain or thelike.

for nse in t n nll lllt'tztllle telephone eirenit nnl the.Hltt'lllllllSHl ,tTlll]) lt \'ttl to. prevent l.. llljtll' fromlightningor from high pot nt inl 40. currents that mu ytrespassnpontheline eir- -'1.cuit, is shown as tluplieittetl for the twositlestheinvention"shown. there is mounted at each side. (if-the vert'iei llong-itnthnztlrenter "of tlw hasel, a pair ol'enrhon-holtlers thatadapted to enter a. corresponding groove in Specification of LiectersPatent.

Application filed Jan-nary 7. 1904. Serial No. 188,056.

vln the m'eo'tnpanting drawings in in,\en il'on is show 11 as morepurtleulatrl' :nluptwl One ot' these e-zi-r-hon-lioltlers,'

the periphery ol" the earlm n B. The purpose ot the rib is to moresecurely retain the 'eurhon ll within the socket aml thewalls 01" theeup 2 will h'z'n'e sutlieient elasticity to permit lhe eurhon B to hel'oreetl tlowtiw aird t until. the rib b enters the groovelin theperiphery 0 1 the eurhoir he runlm'etl. :1 hole '--l Inn hc' l OIlBttlin the wall ol the socket o" that it" ioixitetl in'struinent Inn)" he tlirnht lttlltztlll the c'arboh to loree it from the soeket. wall ol thegocliet =2 tinttons to enable theeurlmn' to he in'or remlilr set inpositioi'n The upper mn'lm ii-hohler pre-lergtlilw"cOnlivltji thatpztlsses tlll fUtl gl-l the upper rilrln'in 8'." this nppet uttt'u'rinetl' wit h neentral hole and with rc'otnitersunlt portion toreceive the nut ti on the bolt ol' t he t'zuhtln-holtlel'. li'olt 3poses through :1 eross-lm-riti of ins'ulzll in;- lllit terinl. suitablewashers beingpreferztl1l [ilnt'ttl I v where the limit ipu ssesthroughThe soelufttorinetl in the upper .eitrlion B t6 ret't'lie t he n'nt (tnitj: he of ihl i'goinilshapeto more seem-eh retd in Zthe nut in pi.)sit ion..

sists at The pair of eurhons llfnnel l) beneath thev o pomte engl ol'titeinstilztttng but correspond Hi :tll l'espt't'ts, to the ezn'honb ljand B. zti nl the holders for these eurhong a1e. .tl1e s'zttiiens thelmhlers sho'\\'n.':it the opposlte Slllt ol' the instrtrz nent.

.(outmll x fthipttgli the instil :tingihuriO is lo rnletlhz hole thronghwhieh pushes it 'Ve-rti mi! l'tltl lt'l."v h v..lowe1 entl ol whiehentlhiS rml ltti's provitleilnt its lower portion with'n slee veoroll'set ll against which hears the lower einl of a eoil spi'ingli. theupdei' einl of this spring; hearing against the utnlernmlh inrinsetlposition. The upper end of the llltl lt) is.serew -thretnletl 'zu'ni' isfi=tted with a -11ut ll; tllltljjalli tlt1l*- llr;$t) that the positionol the hm nut hettuljustetlas (le- 4 propel relati u'i with respect toeaeh other,

;l]le -trienl ptrotee't ve (ltVlttS have hereto ..l'ore heeneonstrueteil in whi'ehtwoee trhons are plneetl zttlpreei t eneh otherwith Insulating strips of llllC-il-"() l',,Slllljlill -natrizil be:tween them, the purpose of such devlces hem tov permitthe slitirt-en'eutmg of hlgh thepe rl oration ol' the mica strips whensuc 'lo'perniit thecarbon to Jon being .Hltlt of the l Jtll' t. illltl serving: to, llOltlit nor-v.

The peripheral only he Spill or hon c011- iii oppositesi le of the hn-r(3 potential currents through the earb01i$ l) within the depressions inthe face or faces of.

high potential currents trespass upon the line. Such prior devicehowever is ob'eo' tionable, because when the mica strips or ikeinsulating material become punctured by the passage therethrough of thehigh potential currents, there is danger of articles of carhon lod ingin the opening 'ormed through the insu ating strip and serving toshortencuit through the carbons and through the hole in the insulatingstrip, the low potential or normal current of the circuit.

One important feature of the present invention consists in forming theopposing faces of the carbons with elevations and depressions so that incase particles of carbon should become detached by the message throughthe carbons of high potential currents or otherwise, such particles ofcarbon will not serve to effect the short-'circuiting of low potentialor normal currents of the circuit. Preferably the opposing faces of boththe upper and lower carbons B, B and. l), l) are formed with rooves andribs l), b and d, d, the ribs or elevations of the upper carbons beingarranged opposite the correspending ribs or elevations of the lrfwercarbons. llence'it will be seen that any particles separating from thecarbons (either because of the passage of high potential currentstherethrough or otherwise) will lodge the carbons and will not serve toshort-cireuit;the low potential or normal current of the circuit.

The lower carbon-holders? rest upon and are preferably connected to aunion'strip 15 having an offset through which passes a bindin -post 16that is furnished with nuts 17 am 18 and from this binding-post- 115 asuitable wire lh'will lead to ground. The bolts 5 of the uppercarbon-holders pass through the up )er ends of the spring contact platesE and C, the lower ends of which springs rest 11 ion the upper face ofthe base A and throu li the. lower ends ofthese contact plates in and F1pass the corresponding binding-posts .20 and 2!. and the lower ends ofthe binding )osts 24) and 31 are prefe'rabli' embedded in the insulatingplale A. Each of the. binding-posts 2t) and ll is provided with theusual nuts 22 and 23 and to the hinciing-post 20 is connected theleading-in wire 1 of the. circuit, while to the bindingost 21 isconnected the leading-out wire F. ihe binding-posts 20 and it also passrespectively through the metal base stri is g and g whereon rest thestandards (1 not (i. lrcferablv, although not essentially, each of thestandards (1 andfl is formed from a single strip of metal bent as shownmore clearly in Fig. 5 ol" the drawing, and the open expanded bottomportion of each of these standards (i and (i' is connected to the base Aby means of a bolt 25th:. passes through the corresponding strip g org.To the yokeshaped upper ends iil the standards G and.

G are plvotall connected. as by bolts 27, the rear ends of thefusewasings ll and ii that carry the fuse wires ll" and ll resiectively, each of these casings being of like construction.

in the )referred form ofthe invention the casings il and ll, which areformed of suit able insulating material. are provided at their rear endswith metallic ferrules It having tubular screw-thrciuled shanks It withwhich. engage metal sockets J, through the rear extensions j of whichsockets pass the pivot bolts 27. The front ends of each of the tubularcasings ll and ii are similarly provided with metal ferrules It, thetubular screw-threaded portions h" of which pass through a switchshandlebar K of suitable insulating material and are engaged by the threadednuts if. The fuse wires ii and ll at their front and rear ends aresoldered or otherwise suitably connected respectively to the tubularshanks 11- and h of the ferrules h and h Beneath the forward ends of thetubular casings ll and ll are mounted the metal posts or standards M and.\l'. eachof these posts being provided preferably with spring jaws m atits upper end to receive and yieldingly engage the ferrule h" of thecorresponding casing ll or ll. Each of the posts M and M is suitablysecured to the base A and these posts M and M pass through metal strips30 and 31 through which pass respectivel the binding-posts 32 and 33.These binding-posts 32 and 33 are furnished respeetiveljv with the usualclamping nuts 34 and from the binding-post 32 leads the outwire N, whileto the binding-post 33% is connected the in-wire N of the circuit. Theswitch bar K is preferably furnished with a handle i" whereby it may beconveniently mani ulatcd, although if desired this handle may ieomitted.

From the foregoing description it will be seen tlrat the low potentialor normal current entering by the. leading-in wire l will )ass in mannerwell understood with those familiar with this class of devices, throughthe f use-wire ll' and connections to the outwire N, to the instrumentor instruments in the circuit. and returning by the wire N,

will pass through the fusenvire It" and con nections to the leading-outwire F. in case lightning or high potential current should in-' vnde thecircuit, as by the leading-in wire F, it will pass through the strip l),through carbons l3 and ll to base plate 15 and out by binding-post Hiand ground wire 19 to the ground. The working circuit and theim'strument or instruments thereon will thus be protected from injury. v

llaving described my invention what I claim is new and desire to secureby Letters Patent is:

l. A protective. apparatus for electric cirami the UiiiPIUF 'wiiiriiisprov vuits com irising a rinse-board, cup-shaped carbon hoiilrr iixrii#0 said biisr board. :2 post on said imsv-boziril. an arm aiijustiihiyrarried on said post and. a pair of (a riion disks one rmnovahiysvcureri to said arm and The other rvmoviiiiiy hold in the hoidor onsaid basv. said carbon disks having oppositviy riispusmi donations()liiiliil iiiijilll'i fairs, suhstmitiiiily as ilvscriomii .3.protvrtiviapparatus for oiwiriu cir- (*Hitr; romprising n imsv-immii, apair of (HT- lmn i'|lliii(!' iivurl ihvroiu. :1 post iixmi to saidbase-imam! inirrmodiuiv sniil carbon hoieirrs. n ("was iirmlilijlirliiibiy inouiiiwi on said post and two pairs of mirhons, twoof'rrhirii are romm'iilii Siililii to ssiiil iiiiii'zimi two oi whichair romovoiiiy nrrim rml within said (:Hifmll hoiiiora. sisiastuiiiiaiiias described.

3. A protective zippzirzii ms for oirctririii virmiizs Comprising twocnrimix-holder s, on? oi \siiivh is provided with iuiziiis wiiorrizy it.ma; he eiectrioiiiiy runner-tori to the ground iiimi 'wi'aii inool'iswhoroh it may he. or-Triroii r-oiiiieoiozi 102i tolopiioiw or likecircuit, ow M has; of rho op iosing fares of {he miroons srriei ilfl-iilt being): formed wit ii eior'o tiUZk-S and J h 31 s )ring forseparating said BDLi'SCWHV mechanism for adjusting said car bun-holder?reiativoiy in each other.

4. A protootiw aippomtus oioo'trioal circuitscomprisin 'wzocarbon-holders one arrrmgeii above Lilo oihar, a, oorhon oiook within eo-ii oi said hoiriers, a fiezriiiir spring support for one of saidcarhon-iioirirrs con nesting the same an aim iwriiiiiga circuit andeieoti'ir'sii coimeixtioii for uniting: the other of saidcarbowiioiaiors in ground, 8521i moons; for adjusting saiiiCiNi)i)'i1-ilfii i9F-S roisifiivoiy .to each other.

5. A protoosivo apparatus for electrical circuits comprising two pairsof oarbom hoiriers, o base supporting the lower one of theCRH'bUiPiIOiiiPTS of each pair, a connection uniting together the uppercarbon-holders of each pair a spring for sepziratioq SRiKiczirbonhoiriors and screw mvc-hanism all? simultaneousiy adjusting thecarbon-holders and their vnriions roiativei to Pauli other. I

5. A protective :ip iarotus for electric cirw riots. comprising ii arrboard. a carbon holder thireon romprifiuig a continuous ring of springmvtzii having on iiiiiiuizir, inwardly extruding: rih at itsouterportion, abortion (iisii rmnmzihly fitting in mid hoifiiei and howin an annular recess adopted to he engagrd ii said rib anri a secondcarbon disk odjiistaiiiy supported adjacent said carbon holder.

7. A proteotive' apparatusifor electric air omits comprising biaso opair of carbon for supporting the lower oi sairicarbork holders, avertically a ijiisibooio spring-sup ioriod hair for carrying the upperone of sa d corboo-hoiiicrs, said upper carbon-holder cmiiprisin; a,boit sus irorieii froiri said bar, and cariioii oroviiioi l with aperforation to receive said brill; and beizw coon torsuiik above tirelower end of said generation:

JAMES A. Emor- W5 mosses:

rimiiirrrgx 'ADAMICKQ, Lruirim Pm:ai'rioo

